VRD-1FF CATV isolator

69.99 Request

The Iso•Max VRD-1FF is a high performance capacitive based isolator that has been meticulously designed to break the ground loop that causes hum and buzz in audio and 60 cycle hum bars in video.

  • Improves audio/video quality by reducing 60 Hz ground currents
  • 2 MHz to 1300 MHz bandwidth spans VHF/FM/UHF/CATV spectrum
  • Capacitive based design minimizes broadcast channel interference
  • Meets FCC Part 76 Regulations for CATV systems

Housed in a compact cylinder and designed for use with RG59 or RG6 type cable, this second generation VRD-1FF employs a unique RF engineered solution that delivers a ruler-flat response from 2 Mhz to over 1300 MHz spanning the VHF/FM/UHF and CATV spectrum. The VRD-1FF’s exceptionally linear response prevents frequency dips that can cause channels to drop out in digital cable. Gold plated F connectors are carefully machined to ensure true 75 Ω compatibility for optimal signal integrity while minimizing reflections and ghosting.

Plug and play easy to use, this passive solution doesn’t require any power. One simply inserts the VRD-1FF in series with the incoming signal and it quietly goes to work without degrading the signal. This makes the VRD-1FF a ‘must have’ for the AV technician that is servicing and installing digital cable as well as conventional CATV or VHF/UHF antenna or MATV systems.

Important Note: The VRD-1FF is NOT suitable for use with RG11 cable or as an isolator for satellite dish systems.

 VRD-1FF User Manual

Applications

VRD-1FF with digital cable tv

The Iso•Max VRD-1FF is the perfect ‘trouble-solving partner for digital video transmission problems. It isolates the source and destination without introducing frequency dips that cause channels to drop. It works equally well to get rid of audio hum and buzz with standard cable TV.

Solving CATV hum bars

When interfacing a distant camera to a video system, hum in the form of 60 cycle hum bars will often find their way into the picture. The Iso•Max VRD-1FF provides a plug & play solution that eliminates the problem-causing stray DC currents without affecting the video quality.

Distributing video in large facilities

Distributing video around a large facility such as an airport, arena, or convention hall can often lead to quality picture problems caused by fluctuating voltage references at various power drops. The VRD-1FF isolates the local monitor from disruptive DC currents.

Specifications

Source Z = load Z = 75 Ω, signal level = -20 dBm

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Insertion loss 5 MHz, HP 3577A Analyzer   -0.19 dB  
Insertion loss 50 MHz, HP 3577A Analyzer   -0.01 dB -0.1dB
Bandwidth LF -3 dB re 100 MHz, HP 3577A Analyzer   1 MHz 1.2 MHz
Bandwidth HF -3 dB re 100 MHz, HP 8711A Analyzer 1000 MHz > 1300 MHz  
VSWR, input or output port 50 MHz to 866 MHz, HP 8711A Analyzer   1.08 (see graph) 1.2
Input to output voltage       200 V DC
Externally Radiated Field at 3 Meters Ref. level = 1.414mVrms, Frequency = 50MHz   1.1uV/meter  
Externally Radiated Field at 3 Meters Ref. level = 1.414mVrms, Frequency = 500MHz   4.8uV/meter  
Externally Radiated Field at 3 Meters Ref. level = 1.414mVrms, Frequency = 1GHz   6.3uV/meter  
Margin below FCC part 76 Limits Ref. level = 1.414mVrms, Frequency = 50MHz   25.6dB  
Margin below FCC part 76 Limits Ref. level = 1.414mVrms, Frequency = 500MHz   12.5dB  
Margin below FCC part 76 Limits Ref. level = 1.414mVrms, Frequency = 1GHz   10.1dB  
Cable length output   2 m (6’) 8 m (25’)
Isolation Impedance output shield to input shield, 60 Hz 1 MΩ 1.3 MΩ  
Capacitance output shield to input shield, 1 kHz   2000 pF  

Graphs

Reflection Co-Efficient
Amplitude vs Frequency

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